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| All Patents in class 301/122 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,535 | Jul. 30, 1850 | E.S. Scripture | Attaching Hubs to Axles | wheelwright | |
| 122,323 | Jan. 02, 1872 | J. Kritch | Improvement in Hubs for Carriage Wheels | wheelwright | |
| 189,439 | Apr. 10, 1877 | G.W. Eldridge | Improvements in Wheel Hubs and Boxes | axle nut wrenches | |
| 238,299 | Mar. 01, 1881 | S.G. Mason | Wagon-axle | wagon and cart wheels, axles and hubs | |